43605

Appears in sequences

• Number of Barlow packings with group P3(bar)m1(S) that repeat after 2n layers.at n=18A011951
• Number of Barlow packings with group R3(bar)m(O) that repeat after 6n layers.at n=15A011955
• T(n, k) = S(2n+2, n+2, k+2) for 0<=k<=n and n >= 0, array S as in A050157.at n=41A050163
• a(n) = (11*n + 4)*C(n+3, 3)/4.at n=16A055268
• T(2n+3,n), array T as in A055794.at n=16A055796
• a(n) = 9*binomial(n,4) = 3*n*(n-1)*(n-2)*(n-3)/8.at n=20A060008
• Number of 5-gonal compositions of n into positive parts.at n=37A069983
• List of codewords in binary lexicode with Hamming distance 8 written as decimal numbers.at n=22A075940
• a(n) = 3*a(n-1) - 4*a(n-2) + 6*a(n-3) - 4*a(n-4), with initial terms 0,0,0,1.at n=18A136401
• Positive integers n that are palindromic in base 2 and whose binary representation has the same number of 0's as 1's.at n=28A143905
• a(n) is the limiting term of the n-th column of the triangle in A188919.at n=23A188920
• Numbers n such that the sum of the distinct prime divisors of n that are congruent to 1 mod 4 equals the sum of the distinct prime divisors congruent to 3 mod 4.at n=24A215949
• Rows of negated binary Walsh matrices interpreted as reverse binary numbers.at n=24A228540
• Maximal overhang that can be attained from a stack of blocks of lengths 1,2,...,n (denominators).at n=8A298021
• Numbers k such that the k-th triangular number is a binary palindrome.at n=44A350988
• Numbers k such that both k and the k-th triangular number are binary palindromes.at n=22A350989
• a(n) is the result of n applications of the function f to n, where f(x) = floor((3*x + 1)/2) (A007494).at n=19A353220